the president said mitt romney was trying to take the country back to the george w. bush years. here he was. >> governor romney's been here making last-minute promises lately. said he's all about fighting for the middle class. says he'd cut taxes for everybody. and ask something from nobody. but the problem is we've heard those promises before. >> mitt romney meantime has added an important endorsement here in the battleground state of iowa. the "des moines register" as of last night has chosen romney because they say this is all about the economy. keep in mind, they endorsed the president four years ago, then-senator four years ago. this marks the first time in 40 years that the newspaper has backed a republican in the presidential election here. just on friday, i spoke with carol hunter. she is the senior news director of the paper. she very much so agreed with me. iowa up for grabs. >> it's pretty much like ohio in that it's very much a toss-up state. all the polls are showing it pretty much dead even. there's a rasmussen report out that has them both at 48%. the rolling aver